Coil positioning machine



April 25, 1933. w COLLINS 1,905,154

COIL POSITIONING MACHINE Filed Oct. 17, 1931 4 Sheets-Sheet 1 /NVENTOR ZW 007mg;

A TIORNEY.

April 25, 1933. E' w COLLINS 1,905,154

COIL POSITIONING MACHINE Filed Oct. 17, 1931 4 Sheets-Sheet 2 I0 INVENTOR.

6 W Ad.

ATTORNEY.

Ap 1933- E. w. COLLINS 1,905,154

COIL POSITIONING MACHINE Filed Oct. 1'7, 1931 4 Sheets-$heet 5 INVENTQR.

BY jwpz/mz ATTORNEY.

April 25, 1933. E, w COLLINS 1,905,154

COIL POSITIONING MACHINE Filed Oct. 17. 1931 4 Sheets-Sheet 4 I NVEN TOR.

A TTORNEY.

Patented Apr. 25, 1933 UNITED STATES PATENT OFFICE I EDWARD W. COLLINS, OF DETROIT, MICHIGAN,'ASSIG1\TOR, BY MESNE ASSIGNMENTS,

TO DELCO-REMY CORPORATION, OF DELAWARE ANDERSON, INDIANA, A. CORPORATION OF COIL PO SITIONING MACHINE Application filed October 17, 1931. Serial No. 569,519.

This invention relates to coil positioning machines and more particularly to machines for positioning form wound armature coils in the radial slots of armatures.

An object of the invention is a machine embodying improvements upon a similar machine disclosed in the patent to Jasper F. Cullin, No. 1,402,217, January 3, 1922.

The prior art machine, above mentioned, and the present machine are similar in many respects. Both include armature supporting head and tail stocks, means for pressing coil sides into the bottoms of the radial armature slots, and means for pressing the other sides of the coils into the armature slots above the first mentioned coil sides.

The present machine, however, provides novel details of armature supporting means and novel details of the coil pressing means and these form the principal objects of the invention.

Still further objects will readily occur to those skilled in the art upon reference to the following description and the accompanying drawings in which Fig. 1 is a front elevation view of the machine, parts being cut away for purposes of clarity.

Fig. 2 is a right end view of the machine.

Fig. 3 is a top plan view of the machine.

Figs. 4 and 5 are sections 4- 4, 5-5 of Fig. 1.

Fig. 6 is a fragmentary detail view as if in the direction of arrow 6, Fig. 1.

Fig. '7 is a section, 77, Fig. 6.

Referring to the drawings, and more particularly to Fig. 1 it will be seen that the machine includes a suitably supported bed 10 upon which are formed a tail stock 12 and a head stock 14, between and on which is supported an armature 16 provided with shaft end portions 18.

The tail stock has a stationary shaft 20 whose end is recessed at 22 to receive an interchangeable coupling 24 in which is disposed one of the armature shaft portions.

The head stock includes a splitbearing whose front cap 26 is secured to the rear cap 28 by flat head screws 30 and a knurled head screw 32. Inside the bearing caps is a sleeve 34 whose rotation may be prevented, by a latch 36, pivotally mounted on the end of a link 38 connected to a screw 30, the latch belng disposed in a groove 40 of the sleeve, when looking is desired. Inside the sleeve 84 and keyed thereto by a key 41 is a slotted sleeve 42 having. a taperedhead 44 between which,and a thrust portion 46 of the sleeve 34 is a tapered ring 48. The head end of the sleeve 42 and the ring 48 are surrounded by a forming sleeve 50 Whose function will be described later. The rear end of the sleeve 42 is threaded intothe threaded end recess 52 of the shaft 54, and the latter is provided at its end with a hand lever 55 whereby it may be rotated. Thrust washers 56 between a collar 57 on shaft 54 and the end of sleeve 34 are also provided.

It will be seen that an armature end shaft 18 disposed in the slotted sleeve 42 may be locked therein by rotating shaft 54 and pulling sleeve 42 back into the sleeve 34, the tapered ring 48 compressing the head end of sleeve 42 onto the shaft end 18. When the shaft end 18 is being locked in the sleeve, latch 36 is held down, but may then be flipped up to permit the locked shaft, the sleeves, etc. to be rotated in the head stock by the hand lever 55.

As the armature is rotated, step by step, the operator places one side 59 of each coil in a radial slot 60 of the armature and steps upon a foot pedal to press that coil side'into the bottom of the slot, repeating the operation on all of the coils and slots.

The coil pressing means, best disclosed in Figs. 2 and 4, includes a bell crank 61 mounted on a shaft 62 (Fig. 1) supported in and connecting brackets 63 projecting forwardly from the tail and head stocks. One end of the crank is pivotally connected to a foot pedal (not shown) by a link 64,and a spring (also not, shown) is provided to hold up the pedal and link. The other end of the crank is provided with a head 65 in which is disposed a blade 66, the latter being pressed outwardly by a spring 67 surrounding the adjusting screw 68. A pin 69 on the blade acts as a stop to limit the movement of the blade.

It will be seen that, as the link 64 is drawn down by the operators step on the foot pedal, the crank is rotated so that its head approaches the armature. The blade is caused to enter the slot 60 and press the coil side into the latter, deforming it to fit tightly against the slot walls.

When all of the coil sides 59 have been pressed into the bottoms of the armature slots, the operator proceeds to draw the other coil sides 69 over the proper slots and to press them thereinto, above the sides 59. Means enabling the operator to perform this operation are providedand such means include three bifurcated and nested arms, manually operated and journalled on a stationary adjustably positioned axle 70 and projecting forwardly therefrom, towards the operator.

The innermost one of the arms, referenced 71, includes two portions 72 traversed by axle 70, and'counected at their forward ends by a cross piece 73 to which is fixed a plate 7%. A slotted blade 75 is removably connected to the latter by screws 76, and may be caused to slide vertically on the plate by means forming part of the outermost one of the arms. Blades may be interchanged, replaced, etc. as desired.

The latter, referenced 7 8, also includes two portions 79 traversed by the axle 70 and connected at their forward ends by a cross piece 80 which forms the operating handle for the outer arm. \Velded to the upper surfaces of and straddling the portions '79 is a heavy plate or hammer 81 having two lugs 82 projecting upwardly therefrom, one on each side of a-r-ing 83 whose pins 84 journal it in the hammer lugs. The ring is fixedly secured to the lower end of a hollow tube 85 (Fig. 2) whose upper end is closed, except for an opening thru which passes an elongated rod 86, the latter having locking nuts 87 on its threaded upper end, and having its lower end threaded into a coupling 88 swivelled by a pin 89 to the cross piece 7 3 of the innermost arm 71 (Fig. st).

The coupling is welded to and inside of the lower end of a hollow tube 90 which slidably fits in the tube 85, and a coiled compression spring 91 in this tube surrounds the rod 86, to form a universal and resilient connection between the innermost arm and the outermost or handle arm.

Surrounding the innermost arm and connected to the outermost arm is an intermediate arm 94, including two portions 95, traversed by the axle 70 and connected at their forward ends by a cross piece 96, to which is secured the inverted U shaped plate 97. The cross pieces 96 and 73 are movable to and from each other, due to the mounting of the arms, especially that of the intermediate arm 94, to be described, and their plates 97 and 74 move to and from each other, jaw fashion,

to clamp between them a coil side 69. Such action serves to flatten the coil side, enabling it to pass thru the constricted mouth of the armature slot, and also serves to align the coil side with the slot so that it may be pressed thereinto by the blade 75, actuated by the hammer 81.

The mounting of the intermediate arm includes discs 99 upon whose peripheries the arm ortions are journalled. These discs are t iemselves journalled on the axle and are Connected, eccentrically, by an elongated pin 100 to the ends of the outer arm portions 79.

It will be seen that when handle arm '78 is rotated forwardly and down by the operator, eccentricdiscs 99 will cause intermediate arm 94 to rotate forwardly and down for part of thetravehand will then cause arm 94 to pull back slightly so that its cross piece plate 97 will en age blade 75 tightly to clamp coil side 69 between plates 97 and 74.

It will also be seen that the inner arm cross piece 73 will draw coil side 69 over the slot and properly align it, if the same had not previously been done by hand.

YVhen the coil side 69 is properly aligned and clamped, the hammer 81 will engage the top edge of the blade 75 and force the latter down, resiliently, to stuff or press the coil side in the slot. Release of pressure on the handle will permit spring 102 on cross piece 96 to lift the blade up, and lifting of the handle will remove all of the arms, freeing the coil and permitting pressing of another coil side in place.

Rapid operation of the machine may readily be effected by an operator, who may use his right hand to rotate the armature, his left to press down upon handle 80, and his foot to press down upon the foot pedal.

In order to shape the coil ends properly, the collar 50 (Fig. 1) is provided and the same is adapted to surround the armature shaft to form a ring around the latter and around which the coil ends will be shaped. The leads maybe shaped properly for positioning in commutator slots by a hook 108 (Fig. secured to the head 65 of the foot press andactuated with the latter. The hook presses the leads down into the space between armatureand commutator (Fig. 7) and gives them the desired shape.

Now having described the invention and the preferred embodiments thereof, it is to be understood that the said invention is to be limited, not to the specific details herein set forth, but only by the scope of the claims which follow:

What I claim is:

1. In a positioning machine of the class described, an axle, a plurality of arms journalled thereon, one of the arms having a movable blade in its end, a hammer on the other arm, and resilient means tending to separate the arms and to resist movement of the hammer towards the blade to be depressed thereby, the resilient means including relatively telescoped tubes one of which is swivelly connected to the hammer, the other of which is swivelly connected to the blade arm, and a coiled compression spring in the tubes.

2. In a positioning machine of the class described, a pair of stocks on which a radially slotted armature may be supported, manually operable means to engage a coil side and to force it into a radial slot, a hook-blade carried by the means and operable therewith and positioned to engage leads between the slot ends and the armature commutator to shape them properly.

8. In a positioning machine of the class described, means for pressing against the windings in an armature core slot thereby deforming the same so as to fit against the slot walls, said means comprising a blade to fit into a core slot entrance, said blade being supported for substantially tangential movement by a rotatably supported arm, a spring carried by said arm for urging the blade into foremost position relative to said arm, and adjustable means for stopping movement of the blade relative to said arm against the tendency of said spring when said blade is urged against the windings by rotation of the arm.

4. In a positioning machine of the class described, means for pressing against the windings in an armature core slot thereby deforming the same so as to fit against the slot walls, said means comprising a blade to fit into a core slot entrance, said blade being supported for substantially tangential movement by a rotatably supported arm, a spring carried by said arm for urging the blade into foremost position relative to said arm, and a screw threaded into the arm for stopping movement of the blade relative to said arm against the tendency of said spring when said blade is urged against the windings by rotation of the arm.

In testimony whereof, I sign this specification.

EDWARD W. COLLINS. 

